Chuck.



j UNITED STATES PATENT OFFICE.

GEORGE W. HORROCKS, OF WILMERDING, AND CHARLES W. MILLAR, OF CARNEGI,

PENNSYLVANIA, ASSIGNORS 0F ONE-THIRD TO HARLEY C. PLATZ, 0F WILKINS- BURG, PENNSYLVANIA.

CHUCK.

Specication of Letters Patent.

Patented May 30, 1911.

To all lwhom 'it may concern:

Be it known that we, Gnonen W. Hon- Rooxs, a resident of Wilmerding, in the county of Allegheny and State of Pennsylvania, and CHARLES W. MILLAR, a resident of Carnegie, county and State aforesaid, have invented a new and useful Im rove ment in Chucks; and we do hereby eclare the following to be a full, clear, and exact description thereof.

Our` invention relates to chucks, kand has special reference to the class of chucks for use in connection with tools and other articles placed thereon for rotation.

The object of our invention is to provide a cheap, simple and eilicient form of a chuck which can be used on motors and will enable the tools to be applied thereon and removed therefrom without the stopping of the motor, as well as enabling tools to be connected to the same by a gripping action.

To these ends our invention consists, generally stated, in the novel arrangement, construction and combination of parts, as hereinafter more specifically set forth and described and particularly pointed out in the claims.

To enable others skilled in the art to which our invention appertains to construct and use our improved chuck, we will describe the same more fully, referring to the accompanying drawing, in which- Figure 1 is a side elevation of our improved chuck. Fig. 2 is a longitudinal central section of the barrel or body of the chuck. Fig. 3 is a side view of one of the blades or jaws employed. Fig. 4 is a front view ofthe slip rlng device removed from the chuck. Fig. 5 is a side elevation of the expansion pin employed. Fig. 6 is a longitudinal central section of the chuck. Fig. 7 is a cross-section on the line 7-7 Fig. 1.

Like symbols of reference herein indicate like parts in each of the figures of the drawing.

As illustrated in the drawing, l represents the barrel or body portion, which is provided with the tapered or cone-shaped exterior portion 2 at front end of the same, and the strai ht exterior portion 3 intermediate of sai portion 3 and the enlarged exterior straight portion 4 at the rear end of the body and forming a shoulder 5 where such portion 4 connects with the portion 3.

Vithin the body portionl and extending -from the rear end of the straight portion 4 1s the inwardly tapering hollow portion 6, which connects with the smaller and similar shaped hollow portion 7 extending into the tapered portion 2 to a solid front end portion 2 1n the same, and extending through said portions 2 and 3 and connectlng .with said portion 7 and with solid end portion 2 are a series of slots 8 for the reception of the blades or jaws 9. These jaws are provided with serrated outer faces 10 at the front end of the same and with a recess 11 in each of said faces back of the serrated faces thereon, while at the rear end of said jaws is a depending lu 12 which fits within a seat 13 1n the portion 4 and su ports such end of the same. The inner' aces 14 of these jaws 9 rest in the slots 8 by their front ends 14 against the solid end 2 on the tapered portion 2, and the rear end of said faces is recessed, as at 15, in order to form a spring portion in said jaws at this point and by the inwardly tapered portion 16 on the body 1 and within said slots, so that the collar 17 when placed in position within the recesses 11 in said jaws can be sprung to place and thereby alot to hold said jaws in position within said s ots.

Within the hollow portion 7 of the body 1 is the expansion pin 18, which is rovided with an inwardly tapered front en portion 19 and the straight rear end portion 20 which extends into the hollow portion 6 and is provided with a hole 21 therein. This pin 18 is adapted to bear at its front end 19 against the innerV faces 14 of the jaws 9 `and iS operated by means of the operating sleeve 22, which is slidably mounted on the portion 4 of the body 1, and is connected to said pin by means of a pin 23 passino through the hole 21 on said pin 18 and through slots 24 in the portion 4 of the body l, as well as through holes 25 in the inner ring 26 of said sleeve. An outerslip ring 27 with a serrated `outer edge 27 ts around the ring 2 6 and is held in place thereon by means of a shoulder 28 on the outer face of said ring 26 fitting in a recess 29 on the outer face of ring 27, as well'as through set screws 30 engaging with said ring 26, and whose heads 30 extend beyond the inner face of said ring 27.

The use and operation of our improved chuck is as follows- The parts of the chuck being assembled together, as shown in Fig. 6, with the chuck being connected in the l manner to t-he shaft (not shown) of a motor or other source of power through its hollow portion 6 bein in engagement with said shaft, and it is esired to apply a tool thereto, such as is shown at a in said figure, which tool consists of a circular brush having a wooden body portion I) and provided with a central opening c in the same, all that is necessary is to push back the sleeve 22 to its rear position by'grasping the edge 27 of the ring 27, which will draw back the pin 18 with the same by the pin 28v connected to said sleeve through the slots 24, and thereby allow the jaws 9- to be dropped inwardly in their slots 8 in the body 1 on account of the tension in said jaws being released by the withdrawal of said pin 18. Aft-er this is done the brush a is slipped onto the cone-shaped portion 2 while the shaft of the motor is in motion by its hole c tting around saidr portion, and then" the operating sleeve 24 by its face 27 is grasped by the operator and pressed toward the collar 17 along the straight portion 4 of body portion 1 until they pin 23 carried by said sleeve reaches the front extremity of the slots 2li, while such operation of moving said sleeve will push out the pin 18, which will thereby press out the jaws 9 andcause the serrated aces 10 on said jaws to bite into the body j of the brush a through the hole c in saldi,

the said brush may be slipped off the cone portion 2 of the chuck, and another brush or tool applied as before described.

Et will beevident that all the applications and removals of brushes and tools to and i V from our improved chuck may be accomplished without stopping or changingA the speed of the shaft carrying the same from the motor or engine, which will overcome the usualV loss of time and connecting and disconnecting of parts in the ordinary chuck employed in this class of work, and also the time which is ordinarily lost in allowing the motor or engine employed .in coming to a dead stop for the applying andv removal of the chuck. It will also be evident that the ordinary wear and tear usually occasioned motor employed will be overcome, which will add' to the longevity of the engine or motor in such work, while the chuck can have the desired tools applied and removed therefrom rapidly and vconveniently and without injury to the person operating the' device or to the parts of the chuck or tools. The parts of the chuck are alsol capable of beingy easily and quickly detached, so that i they can be repaired or renewed at will and when desired.

It will be obvious that various forms of tools, brushes and articles other than those described may be employed with our improved chuck as well as the number of gripping jaws may be varied, and that various modifications and changes in the design and construction of the same may be resorted to, without departing from the spirit of the invention or sacrificing any of its advantages.

hat we claim as our invention and desire to secure by Letters Patent is- 1. A chuck comprisingv a body portion having gripping jaws movable through the same for engaging with a removable tool on said body portion, a movable pin in said body portion for openingysaid jaws to engage the tool during the rotating of'said chuck, slidable means on said chuck for moving said pinand an operating device rotatably held on said means.l

2'. A chuck comprising a body portion having gripping jaws movable through the same for engaging with a removable tool on said bod-y portion, a movable pin in said body portion for opening said jaws to engage t-he toolduring the rotating of said chuck, a slidable sleevey on said chuck for' moving said pin, and an operating ring rotatably held on said sleeve;

3. A chuck comprising a body portion :having gripping jaws movable through thev same for engaging with a removable tool f on said body portion, a movable pin in said bodyl portiony for opening said. jaws to engage the tool during the rotating of said chuck, a slidable sleeve on said chuck and Y j connected to said pin for moving the same,

and a loosely mounted removable ring on said sleeve and rotatably held thereon for l operating the same.

4. A chuck comprisingl a body portion `having gripping jaws movable through the same for engaging with a removable tool eon= said body portion, a movablev pin in said `body' portion for opening said jaws to engagethe tool' during the rotating of said chuck, a slidable sleeve .on said chuck and :connected tosaid pin by a pin connected ythereto and passing through the same and 1through said body portion, anda loosely mounted removable ring on said sleevev and rotatably held thereon for operating the i same. by the stopping and starting of the engine or i V5. A chuck comprising a body portion connected to said pin by a pin connected' thereto and passing through the same and through said body portion, a shoulder on said sleeve, and a loosely mounted removable ring on said sleeve and rotatably held against said shoulder for operating said sleeve.

6. A chuck comprising a body portion having gripping jaws movable through the same or engaging with a removable tool on said body portion, a movable pin in said bodyportion for opening said jaws to engage the tool during the rotating of said chuck, a slidable sleeve on said chuck and connected to said pin by a pin connected thereto and passing through the same and through said body portion, a shoulder on said sleeve, a loosely mounted ring on said 15 sleeve for operating the same, and screw bolts on said sleeve and fitting against said ring by their heads to rotatably hold said ring against said shoulder.

In testimony whereof, We the said 20 GEORGE WV. HoRRooKs and CHARLES W. MILLAR, have hereunto set our hands.

. GEORGE W. HORROCKS.

CHARLES W. MILLAR.

Witnesses:

JAMES L. WEHN, J. N. CooKE.

Copies of this patent may be obtained for 've cents each, by addressingthe- Commissioner of Patents,

, Washington, '.D. C. 

